Composite lathing.



No. 889,167. PATENTED MAY 26, 1908 P. WOLF.

COMPOSITE LATHING. APPLIOATION FILED 00119. 1907.

. cording to the following formula, althoughI I may use any other suitable proportions or UNITED STATES.

PATENT OFFICE.

FREDERICK WOLF, OF NEW YORK, N. Y., ASSIGNOR OF ONE-THIRD TO CARL BARKHAUSEN, OF NEW ROCHELLE, NEW YORK, AND ONE-THIRD TO GUSTAF J; BIDTEL, OF HOBOKEN,

NEWJERSEY.

COMPOSITE LATHING.

Specification of Letters Patent.

- Patented May 26, ieos.

Application filed October 19, 1907. Serial No. 398,151.

T 0 all whom it may concern:

Be it known that I, FREDERICK WOLF, a citizen of the Empire of ircrmany, residing in the borough of Manhattan, city, county, and State of New York, have invented a certain new and useful Improvement in Composite Lathing, of which the following is a specification.

My invention relates to an improvement in composite lathing, which is used to hold plaster on the walls and ceilings of buildings, and is also used as a skeleton tension member in cement or concrete floors or walls. In the accom anying drawings, Figure 1 is a lan view 0 the wire network forming the oundation of my structure. Fig. 2 is a plan view of my completed structure, and Fig. 3 a section on line 3-3 of Fig. 2.

In Fig. 1, a a, are wires of'galvanized iron or other suitable material, woven into the form of a coarse net work. The distance between the parallel wires is preferably about three quarters of an inch, although the distance may be varied to suit varying condi tions.

In Fig. 2 the wires 0, a are inclosed in a structure of cement which, in the particular construction shown, assumes the form of a series of crosses c c, surrounding openings f f, each cross being centered over one of the points of crossing of the wires a a/Q Each cross is preferably provided with ridges, such as ridges d d, andwith depressions, such as depressions c e, to assist in holding the plaster, concrete or cement. The arms of each cross are preferably gradually reduced in thickness, as at g g, as they approach the arms of the adjacent crosses, in order that, when the fabric is bent, either in rolling for transportation or in bringing it into theshape in which it is to be used, the cement covering may easily be cracked at the thinnest portions between the arms of the crosses without injury to the main body of the covering.

I refer to make the cement covering acingredients which produce a substance which ma be placed about the wires in plastic form an harden, without the application of furlxnace heat, to a covering firmand strong enough to hold theplaster, concrete or cement, and not injuriously affected by the ingredients of the same. v

Calcined pulverized magnesite 50 pounds l Solution of chlorid of magnesium (2025 Baum) 5O Asbestos, powder or fiber- 30 SileX, or other silicious material- 15 For the asbestos I may substitute cocoanut fibers, and for the sileX I may substitute lava, gypsum, or ordinary cement.

I do not'claim the shape of my device as new, as this is disclosed in the German patent to Stauss, No. 51,158, ofApril 26,1889,which describes a composite lathing 'in which the crosses are of brick, and are constructed by laying the clay about the wire netting and then burning it in a furnace or kiln, nor is the exact shape of my lathing of importance, as long as it is provided with projections to hold the plaster, cement or concrete, it being, of course, always advisable to provide aper- .tures, such as apertures f f, to enable the material to look upon the lathing.

My composite lathing possesses particularly the merits of cheapness, lightness and durability. It is elastic and fireproof. Itis li hter than ("expanded metal, the amount 0 metal beingreduced to a minimum, only so much being used as is necessary to give the required strength, without emplo ing addi tional metal to afford a grip for t e laster, cement or concrete; and it'is more urable, as all the metal is inclosed and protected by the cement covering. It is referable to the lathing described in the a ove mentioned German patent for a number or reasons: The coverin dries without the necessity of burning in a urnace, thus making the process burning, besides being an expensive process, limits the size of the sheet, while my lathing may be made in strips of any length. Moreover, the burning destroys the temper-of the Wire and, moreover, makes the use of galclay, thusex osingportions of the wire between the en s of the crosses'and such porof manufacture a much cheaper one. The

vaniz'ediron impossible, while it shrinks the K tions thus becoming liable to rust. I am athing, galvanized iron able to use, my wire, or wire covered with rust proof paint, and even subhgire ractically at all times protected by th solid covering of cement .I claim:

r i 1'. Composite lathing comprising a 'net work of wire covered with cement, substantially as and for the purpose described.

2. Composite lathing comprising a net work of wire covered withcement, and pro- Vided' with transverse apertures,- substanscribed.

4. Composite lathjng comprisin a net work of wlre covered with cement o varying.

thickness weakened at a portion substantially midway between the crossing points of the wires and provided with transverse apertures, substantially as and for the purpose described.

In witness whereof, I have hereunto set my hand in the presence of two subscribing witnesses, this 17th day of October, 1907.

. FREDERICK WOLF. -Witnesses:

' FRITZ V. BRIESEN,

JOHN A. KEHLENBECK. 

